Obama's Secretary of Energy, Steven Chu, found a simple solution to global warning: Paint your roofs white. Not only would these reflect light rays but heat rays too, reducing the need of air conditioning in the summertime.
"if you take all the buildings and make their roofs white and if you make the pavement more of a concrete type of color rather than a black type of colour, and you do this uniformly . . . it’s the equivalent of reducing the carbon emissions due to all the cars on the road for 11 years.” -Chu
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